Manufacture of covered tubing



' Nov. 11', 1941.

K. PAPE MANUFACTURE OF COvERED TU BING Original Filed April 27, 1940ATTORNEYS tPctcntedNov. 11, MM

oc s

' WlrE ms PATENT oss'lc 2,252,515 i mos-Across 0s oovnmm rooms KarlPane, mover, N. 3., casino: to Beslstoflex @omomtlcm, Belleviile,

New York N. #1., a corporation of original commotion April 27, 1940,Serial No, 331,952.. Divided and this application April 2t,

1941, Serial No. zooms? a v comm. This invention relates to, themanufacture of linear articles which have, a woven or braided covering.

' More particularly, the invention pertains to cpparctus tor use in thestep of bonding such cov- (031. ti -l8) the following description, takenin connection ering to the underlying material by the application ofsolvent or solvent vapor.

This application is o division of my co penollng application Serial No.331,952, filed April 2'3,- I

1940, wherein there is described at method. of covering tubing ofsynthetic plastic material with a woven or braided iabrlm The apparatushero in described and claimed may be userl in conv ing outvthe coveringof tubing but its use is not limited thereto as it may be used inbonding fabric covering to other lines; crtlcles such as insulated wireor the like.

As-is well known, linear articles, such so flesible tubing, may have s.tabrtc covering formed directly thereon in various typos ot'hrodinorowchines or looms for weaving tuholoc tshrtc.

It is to be understood that the term sweatlog cs'usedhereinafter or inthe claims is intended to includes braiding as o, particular type rialmay he efiectccl and to that cool to 'outormatically stop theoppllcotioh of solvent lllpfit'i stopping of the machine by which thecovcrtnc is being formed.

Other objects and eclvcntoccs will cppeor in the course of the followingooscrtotlmou As on illustration of how the invecttoc. may he procticemthe present pretcrcctt cmhocltcocht thereof will he clcsctihccl. Ehcloset this embodiment the ootcrioc o1? moms or? flex this and elasticpolyvinyl alcohol composition will he'useolos on emmhlo plastic more orless soluble wotct and 'cscoh'le he r; sottch eol slightly and renderedcohesive co its surface when subjected. to steam for only a short time;

with the drawing in which:

Fig. l shows certain essential parts of o crotch 1m; machine with theaddition of as solvent to plying device for use in accordance with thehit-=- vention; 1

Fig. 2 shows the means for controlllncthc so plicotion of solvent to thetubing and its solotlonshlp to the braiding machine, port ot-which; isshown somewhat schemctically;

Fig. 3 shows, in greater detail, thccutomctto air control and th meansfor cctucting it upon stopping of the braiding machine: 1 1 Fig. 4 is e,vertical longitudinal section. through the solvent applying chamber; I

Fig. 5 is a. section of the some onthc line hzc-hc ting. t; and. 1

h Fig. 6 iso cross-section on the line tc-tzo ct Fig. c. h r

Referring to the drawing, Fig. I shows certcin ports of a common type ofbraiding machine tneluding c slotted plate it, the slots in which tic:

. termine the trove! of carriers it which care The covering of thistiming may he cccom plishecl in s. hrottling machine otwcll hnownconstruction; *orcferohly with certain moclhcc tions such as thoseoescz'loetl in my otolesclcl oil-pending application. The omorctus ofthe present invention mot he userl. and operated lo combination with themechanism of such c, braidactuated-in the usual manner by at cost trots(not shown). Each carrier holds. the scoot cylindrical cross-wounclspool E53 and its provhlc-ol with the usual ycm tensiontng device fit.The plate M has at central cporturc tit through which posses the tubing2h which'is to he covct'ctl. (After mine covered, the tubing isclesignotctt M). The tubing is usually unwound from c, root (not shown)underneath the machine. its is wch known the carriers, which may vary inmom or but of which there ore ususlly ct lccst ttcvct 9 about the tubingin such mower os-to 'wecvc hrslcl thereon. The tubing posses upworctigvowes: o rotating ccpetsh ht. To holol th to contact with the ccpstch,,ctootwl roller 2t ls usocliy promoted and is press tho capstan osultohle moons. As the to 2t passes oh? the ccpstcc. ht, it tochit-octet through the solvent opgalyhm clecilcc If it is desired to:mcintoih the t1 under on imitating got'cssme the 5 process, oshcctlength ct flexible tubing c be provided-with c fitting M which conscrtecl into the end of the tubing inc is connected with c compressedmoo which may be equipped with pressure The other eml of tho whic mot hecm tight by folding it over cncl clamping it, cs choc/"L at 3t. I V v"the chamber th in which the solvent is opphccl for bonding the coveringto the tubing as it lccvcc mg machine, o, he readily understood from 555the capstan is shownincletcil in t, ll coal 6,

ecstatic but prevents steam or condensate from entering.

V with means for automatically stopping the ma andis constructed asfollows: The chamber proper is a sheet metal cylinder, the ends or whichare closed except for ope ngs in the upper part through which the tubing20' passes. These openings are preferably in the form of short 5 tubes60, 8|, the edges 0! which are turned inwardly to closely fit the tubing20'. The tubes l0, 6| are provided-with openings 62, 63 within thechamber 29 through which any condensate can drain into the chamber. Apipe 6 having a central opening 65 passes through the chamber from oneside to the other and is secured therein by soldering'or the like, sothat the opening of the pipe is directed away from the tubing 20, thuspreventing the steam, which is the solvent vapor 'used in thisembodiment, from blowing directly,

against the tubing. The pipe 64 is connected at one end to a steam line66 in which is interposed a manually operated valve 61 having a handwheel 88 which is extended to a position convenient for the operator ofthe braiding machine.

The other end of the pipe 64 is connected to a compressed air line 69containing a check valve 10 which permits air to enter the chamber 29til the air line. At the lowermost portion of the chamber 29, as it isnormally positioned as shown in Fig. l, it opens into a drain pipe H.

In order to obtain the correct amount of steam, the valve 61 isopeneduntil the steam can be seen emerging from the tubing 60 or 6| andit is then shut down to the point where there is just enough steamescaping to be visible.

Braiding machines are customarily provided chine whenever a yarnbreaksor a spool becomes empty. If the application of solvent wereallowed to continue during the periods when the braiding machine isstationary, some sections of the tubing 20' would be subjected to theeffects of the solvent for longer periods than others, which would beliable to damage the tubing and would produce a non-uniform product. Thepresent invention provides means for automatically scavenging the steamor other solvent from the chamher 29 immediately upon the stoppage ofthe machine. As shown in Figs. 2 and 3, the air line 69 is controlled bya plunger type air valve 80 which is actuated by a plunger 8|. Thisvalve is mounted adjacent the standard trip device 82 which is pivotallymounted on the plate'll of the braiding machine adjacent the slots 84 inwhich the carriers l2 travel.

As is well known, when ayarn breaks or a spool becomes empty, a shoe 85on the carrier I2 (Fig. 1) drops to the bottom of the carrier andengages the trip lever 82,- the path of the shoe 85 being indicated in.dotted lines in Fig. 3. This I moves the lever 82 to the right, asshown' in the drawing, and disengages a clutch (not shown) through themedium of an upwardly extending stud 86. The lever 82 at the same timepresses against the plunger 8 I and admits air into the air line 69, themanually operated air valve being open at this time. The lever 82remains in this position, holding the air valve 80 open, until themachine is started again by moving lever 82 to the left. Immediately on.stopping of the machine, however, the operator closes the steam valve 61and thereafter closes the manual air valve 90. When the machine is againstarted, the steamvalve 61 is opened and adjusted and, the plunger airvalve 80 then being closed, the manual air valve 90 is re-opened. Themachin is then in condition automatically 'to blow air into the chamber29 when it stops again. Itthe operator stops the machine, he does so bymoving lever 82 to the r ght and the air valve is solvent vapor.

The foregoing detailed description'is to be considered as merelyillustrative as various modifications may be made within the purview-ofthe invention as defined in the claims.

What is claimed is:

1. Apparatus for bonding a woven covering to a linear article by theapplication of a solvent to said article through said covering as itleaves the machine by which said covering is applied, said machine beingprovided with stopping mechanism including a part which is moved in onedirection upon stopping and in the opposite direction upon starting saidmachine, said apparatus comprising a chamber through which said articlepasses after being covered, a conduit adapted to introduce solvent forthe article into said chamber, an air line adapted to introducecompressed air into said chamber, and a valve in said airlineoperatively associated with said part so as automatically to be openedupon the movement of said part when the machine stops and closed uponthe opposite movement of said part when the machine starts.

2. Apparatus for bonding a woven covering to a linear article by theapplication of a solvent to said article through said covering as itleaves the machine by which said covering is applied, said machine beingprovided with stopping mechanism including a part which is moved in onedirection upon stopping and in the opposite direction upon starting saidmachine, said apparatus comprising a chamber through which said articlepasses after being covered, a conduit adapted to introduce solvent forthe article into said chamber, a manually operated valve in s conduit,an air line adapted to introduce co pressed air into said chamber, and avalve in said air line operatively associated with said part so asautomatically to be opened upon the movement of said part when themachine stops and closed upon the opposite movement of said part whenthe machine starts. 7

3. Apparatus for'bonding a woven covering to a linear article by theapplication of a solvent to said article through said covering as itleaves the machine by which said covering is applied, said machine beingprovided with stopping mechanism including a part which is moved in onedirection upon stopping and in the opposite direction upon starting saidmachine, said apparatus comprising a chamber through which said articlepasses after being covered, a conduit adapted to introduce solvent forthe article into said chamber, a manually operated valve in saidconduit, an air line adapted to introduce compressed air into saidchamber, and a valve in said air line operatively associated with saidpart so as automatically to be opened upon the movement of said partwhen the machine stops and closed upon the opposite movement of saidpart when the machine starts, and a second manually operated valve insaid air line.

4. Apparatus for bonding a woven covering to a linear article by theapplication of a solvent to said article through said covering as itleaves the machine by which said covering is applied,

said machine being provided with stopping mechanism including a partwhich is moved in one within the chamber directed away from the path ofsaid article, a conduit connected to one end oisaid pipe for conveyingsolvent thefretd an air line connected to the other end oi said pipe forconveying compressed air thereto, and avalve in said line operativelyassociated with said part so as automatically to be opened upon themovement of said part when the machine stops and closed upon theopposite movement of said part when the machine starts.

